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摘 要
我国塑料模具工业虽然起步晚、底子薄，与工业发达的国家相比有很大的差距，但改革开放以来，在国家产业政策的支持和引导下，我国塑料膜具技术和模具工业近年来发展迅速。塑料模具的产量和水平发展十分迅速，高效率、自动化、大型、长寿命、精密模具在模具产量中所战比例越来越大。我所选杯盖，他借助圆、球体、长方体，还有圆柱体的完美结合，以独特的外形、圆滑的外表给予我视觉上的享受，不仅有他相应的使用价值，更具有一定的艺术观赏性。我可以通过此次模具的设计，了解我国模具设计技术的一个水平以及发展趋势。
本次设计根据塑料制品的要求，了解塑件的用途，分析塑件的工艺性、尺寸精度等技术要求，选择塑件制件尺寸。本模具采用一模两腔，侧浇口进料，注射机采用海天80X1B型号，设置冷却系统，CAD和UG绘制二维总装图和零件图，选择模具合理的加工方法。附上说明书，系统地运用简要的文字，简明的示意图和和计算等分析塑件，从而作出合理的模具设计。
关键词：旋钮；注塑；模具；机械；CAD
Abstract
Although China's plastic mold industry started late and has a thin base，compared with the industrial developed countries，there is a big gap，but since the reform and opening up，with the support and guidance of the national industrial policy，China's plastic film technology and mold industry have developed rapidly in recent years. The production and level of plastic molds are developing very rapidly，and the proportion of high efficiency，automation，large scale，long life and precision molds in mold production is increasing. I choose the cup cover，he with the help of the circle，sphere，cuboid，and the perfect combination of cylinders，with a unique shape，smooth appearance to give me visual enjoyment，not only has his corresponding use value，but also has a certain art Ornamental. Through this mold design，I can understand a level of mold design technology in China and the development trend.
This design according to the requirements of plastic products，understand the use of plastic parts，analysis of plastic parts process，dimensional accuracy and other technical requirements，select plastic parts size. This mold adopts double cavity，side gate feed，injection machine adopts Haitian 80 X1B model，set up cooling system，CAD and UG draw two-dimensional assembly drawing and part drawing，select reasonable processing method of mold. Attach instructions，systematically use brief text，concise schematics and calculations to analyze plastic parts to make a reasonable Mold design.
Keywords: knob；injection molding；mold；machinery；CAD
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